Why waste YOUR time and your opponents time if you BOTH know the outcome of the game already? No. Resigning in an objectively lost position is a big time saver and it's sportsmanship.
With that said, you should only resign if you know for sure you're going to lose
Personally, I will often resign if the game appears to be a rather losing battle and probably not worth the time / energy / attention etc. to see if maybe my opponent will grant a stalemate.
There are times when I will also offer a draw for games where it appears I will likely win, but it is rather 'stalematish' and maybe we don't feel like going through the tedious next 20 moves to actually "prove it" ...
The options are there to offer a draw or resign, which is nice and I appreciate you sharing your perspective that maybe resigning could be considered to an action of a sore loser, but from my experiences, I have resigned when my opponent has done well (or maybe also if I made mistakes and 'blew junks') and has always been in admission that my opponent did a good job and there is not much need to keep playing out the last bit of a game.
A question you might enjoy considering is that if you see your opponent can mate you in 2 moves and it is obvious and your opponent has been playing well and has obvious been setting up that scenario, would you feel a need to actually see those next two moves played out?
Up to you to determine, but I hope you have fun playing in all cases 
Best wishes
I feel like my ego us crushed whenever I resign
Take up another game/sport. Chess is clearly not for you.